Class 290/6 - MULTIPLE-ARMATURE DYNAMO

Subclass of Class 290 - Prime-mover dynamo plants
Definition: Prime-mover dynamo plants having a dynamo-electric machine
No. of patents: 37
Last issue date: 03/15/2011

Number	Title	Issue Date
7906862	Multiple prime power source locomotive control A control strategy for operating a plurality of prime power sources during propulsion, idling and braking and is applicable to large systems such as trucks, ships, cranes and locomotives utilizing diesel engines, gas turbine engines, other types of internal combusti...	03/15/2011
7292009	Hybrid type working machine Simplifying the controller of hybrid type drive unit. The output of a generator driven by engine is connected directly to a motor 7 through a converter or switching circuit 10 without being charged on any battery. The output of each phase of the genera...	11/06/2007
7123495	Inverter controlled generator set An inverter controlled generator set including: a power supply unit that uses a generator driven by an engine as a power supply to output a DC voltage; an inverter device that converts the output voltage of the power supply unit into an AC voltage; and a rotational ...	10/17/2006
7109687	Three-phase ac generator for vehicle A neutral point diode having three connecting terminals electrically commonly connected to each other is used in a type for connecting each generating coil of a three-phase alternating current electric generator for a vehicle in a Y-shape connection. The coil termin...	09/19/2006
7088027	Rotating asynchronous converter and a generator device The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second...	08/08/2006
7078825	Microturbine engine system having stand-alone and grid-parallel operating modes A microturbine engine that includes a compressor that is operable to provide a flow of compressed air. The compressed air flows through a recuperator where it is preheated before delivery to a combustor. The preheated compressed air mixes with a fuel and is combuste...	07/18/2006
7045913	Microturbine engine system A microturbine engine that includes a compressor that is operable to provide a flow of compressed air. The compressed air flows through a recuperator where it is preheated before delivery to a combustor. The preheated compressed air mixes with a fuel and is combuste...	05/16/2006
7030581	Motor controller This invention relates to a motor controller for driving an object to be controlled by torque from a motor responding to a computed torque command, the object being provided with the motor and a mechanical load. The motor controller includes: a feedback computation ...	04/18/2006
7002259	Method of controlling electrical rotating machines connected to a common shaft A controller for high torque, low RPM wind turbines and ocean current turbines. The turbine consists of a large, input power shaft-mounted, rotating bull-gear with stationary powertrains mounted around its periphery. The gear teeth on the bull-gear rotate past the t...	02/21/2006
6998728	Method and apparatus for controlling output current of turbine/alternator on common shaft An electrical system and method for a turbine/alternator comprising a gas driven turbine and a permanent magnet alternator rotating on a common shaft includes an inverter circuit connectable either to an output circuit or the stator winding of the alternator. A cont...	02/14/2006
6969922	Transformerless, load adaptive speed controller The invention in one embodiment is an improved variable speed engine/generator set with an integrated power conditioning system and control method including load shedding to generate high quality AC power with improved fuel efficiency and reduced emissions. The vari...	11/29/2005
6957990	Electric houseboat An electric houseboat comprises a hull and a house-like structure mounted on the hull which includes at least one bedroom, a bathroom, and a kitchen. A Diesel generator comprises the sole power source for the houseboat. The operating temperature of the Diesel genera...	10/25/2005
6909263	Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p...	06/21/2005
6906447	Rotating asynchronous converter and a generator device A rotating asynchronous converter for connection of AC network with equal or different frequencies employs a first stator connected to a first AC network with a first frequency and a second stator connected to a second AC network with a second frequency, and a rotor...	06/14/2005
6903466	Wind-power generator pod constituted by the body of an electricity generator The pod of wind-powered generator is constituted by a rigid fairing in which at least one electricity generator for coupling to at least one wind-driven propeller is disposed. The rigid fairing of the pod is formed by the body of the generator in which there are mou...	06/07/2005
6879053	Transformerless, load adaptive speed controller The invention in the simplest form is an improved variable speed engine/generator set with an integrated power conditioning system and control method, used to generate high quality AC power with optimum fuel efficiency and reduced emissions. The variable speed gener...	04/12/2005
6876113	Alternators and improvements to rotary internal combustion engines The present invention provides improved alternators for use alone or in combination with, for example, rotary internal combustion engines wherein the alternators are characterised by absence of moveable bearings or mountability to existing driving shafts by use of a...	04/05/2005
6653744	Distributed generation drivetrain (DGD) controller for application to wind turbine and ocean current turbine generators A wind or ocean turbine has an input-power shaft-mounted, rotating bull-gear with smaller stationary pinion-driven powertrains including generators mounted around the periphery of the bull-gear. A controller regulates torque experienced by each powertrain...	11/25/2003
6462429	Induction motor/generator system A generator/starter system for starting an engine and for tapping power from the engine in order to generate electricity includes a squirrel cage rotor, a main stator winding, an auxiliary stator winding, and an excitation source. The main stator winding ...	10/08/2002
6297575	Combined power driven device having a three-layered electromechanical structure with common structures A combined power driven device is made up of three layers, each of the three layers forming an electromechanical structure such as a stator or an armature. One of the three layers serves as a common magnetic structure for interaction with the electromecha...	10/02/2001
6239524	Power conversion methods and apparatus Apparatus for generating rotating motion includes one or more electrical motors or generators arranged in a circle about a central shaft. The motors or generators are attached to a rotatable plate, which in turn is attached to the central shaft. The shaft...	05/29/2001
6175163	Integrated high frequency marine power distribution arrangement with transformerless high voltage variable speed drive A marine power distribution arrangement utilizes generators driven at standard or higher than normal speeds and/or having a number of poles to produce electric power at a standard 50/60 Hz frequency or substantially higher than the standard 50/60 Hz frequ...	01/16/2001
6118194	Generator-carrying cogeneration system This invention provides a cogeneration system formed compactly and provided with a plurality of generators, wherein a plurality of miniaturized generators are coupled to a flywheel provided in an engine. In this cogeneration system, a toothed endless belt...	09/12/2000
5977648	Hydraulically driven low reactance, large air gap permanent magnet generator and voltage regulation system for use therewith An electric power generating system comprises a low reactance, large airgap permanent magnet generator driven by a hydraulic motor to generate a poly-phase AC output voltage. Because the permanent magnet generator is a low reluctance, large airgap machine...	11/02/1999
5828136	Combined power system using a rotation speed and torque detector A combined power system includes an active power source and an auxiliary power source. The rotation speed signal of the active power source and the rotation torque difference between the active power source and an output shaft of the combined power system...	10/27/1998
5587647	Dual output synchronous-induction starting/generating system An electric power starter generator system comprises a synchronous generator and an induction motor/generator mutually coupled to a shaft being driven to an external prime mover. The synchronous generator and the induction motor/generator are driven by th...	12/24/1996
5387818	Downhill effect rotational apparatus and methods Methods and apparatus for flexibly and elastically creating a nonbinding downhill effect is disclosed. The downhill effect physically translates the center-of-mass of rotating apparatus in a forward direction circumferential to the direction of motion whi...	02/07/1995
5281905	Induction machine based hybrid aircraft engine starting/generating power system This invention relates to a hybrid AC/DC power source for aircraft power generation and aircraft engine starting. The power source employs an induction motor/generator and a converter for converting high frequency AC power into separate DC and low frequen...	01/25/1994
5260617	Electric generation system An electric generation system includes an electric generator swung in a orbit and having an external contact surface for rotation of its armature by a rolling engagement with an enlarged band. The band can be turned relative to the generator within a larg...	11/09/1993
4728841	Dual permanent magnet generator construction Difficulties in precisely and easily adjusting the relative position of two rotors, 72, 104, 206, 226 in a dual permanent magnet generator are avoided in a structure including first and second side by side armatures 92, 108, 218, 230 with the rotors 72, 1...	03/01/1988
4684873	Hybrid generating system Prior types of generating systems for producing AC and DC output power have utilized integrated drive generators for producing the AC power and means for rectifying the AC power developed by the drive generator to produce the DC power. However, such types...	08/04/1987
4488053	Electric constant speed/variable speed drive/generator assembly The invention is an "electric" constant speed/variable speed drive/generator assembly (10), which finds use in aircraft, and in particular, in "all-electric" aircraft. The assembly (10) includes a planetary differential (20) whose output is controlled by ...	12/11/1984
4476395	Tandem-generator design for aircraft The invention is an aircraft power generation system which includes a tandem generator (10) which includes left and right generators (14, 15) arranged within a single housing (12). The left and right generators (14, 15) are driven at the anti-drive end of...	10/09/1984
4447737	Variable frequency induction generator The invention is a combination induction generator/synchronous generator power system which finds particular use in aircraft environments. The power system includes an induction generator (36) and a tandem generator (38) enclosed in a single housing (34)....	05/08/1984
4328427	Smooth series parallel transition for dual winding traction alternator An engine-driven dual winding separately excited alternator supplies electric power to a parallel array of d-c traction motors via a power rectifier assembly comprising three legs of serially interconnected diodes. The alternator has a first set of 3-phas...	05/04/1982
4305001	Constant frequency alternator A double induction dynamo electric machine of the exciter-generator type provides an AC electrical output that has a substantially constant frequency characteristic by using a closed frequency loop arrangement without requiring electronic controls or, in ...	12/08/1981
4292532	Two-stage electric generator system The system described herein is particularly adapted to convert mechanical energy from a wind or hydraulic driven turbine into electric energy and comprises: an exciter generator and a main generator in a housing traversed by a rotatable shaft; the exciter...	09/29/1981

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Class 290/6 - MULTIPLE-ARMATURE DYNAMO